CN203343366U

CN203343366U - Tool device of iron mould sand-coating casting brake shoe

Info

Publication number: CN203343366U
Application number: CN 201320351604
Authority: CN
Inventors: 马益诚
Original assignee: Zhejiang Electromechanical Design and Research Institute Co Ltd
Current assignee: Zhejiang Electromechanical Design and Research Institute Co Ltd
Priority date: 2013-06-19
Filing date: 2013-06-19
Publication date: 2013-12-18
Anticipated expiration: 2023-06-19

Abstract

The utility model relates to a tool device of an iron mould sand-coating casting brake shoe, and belongs to the field of iron mould sand-coating casting. The tool device of the iron mould sand-coating casting brake shoe comprises a lower casting piece and a gating system, wherein the lower casting piece and the gating system are arranged on a mould board. The tool device of the iron mould sand-coating casting brake shoe also comprises an upper casting piece, a single-casting piece, a connecting board, a loam core and a flow gate; the lower casting piece and the upper casting piece are connected with the connecting board to form the single-casting piece; the loam core is arranged in an iron mould cavity and is matched with an inner cavity of the single-casting piece, a sprue base and the lower part of a cross gate; the flow gate is arranged in an inner pouring gate; one end of the flow gate is connected with the cross gate and the other end of the flow gate is connected with the single-casting piece. The tool device of the iron mould sand-coating casting brake shoe is reasonable in structural design, and the brake shoe prevents the casting piece defect phenomenon caused by knocking of the flow gate, so that the finished product ratio of the casting pieces is increased, the production efficiency is improved, and the produced casting piece of the brake shoe is smooth and clean in surface and accurate in size.

Description

A kind of fitting device of Sand-Faced Metal Mould Casting brake-shoe

Technical field

The utility model relates to a kind of founder's assembling device, especially a kind of fitting device of Sand-Faced Metal Mould Casting brake-shoe, and it belongs to the Sand-Faced Metal Mould Casting field.

Background technology

Sand-Faced Metal Mould Casting belongs to one of Special Processes of Metal Castings, development along with Domestic Automotive Industry, apply more and more wider, present technology is to adopt the green-sand casting, adopts the mode of two, a type, and product yield is 60～70%, production cost is high, production efficiency is low, and the surface quality of continuous castings of moulding is not bright and clean, can not meet existing technical need.

China Patent No. CN201110190494.0 discloses the patent of invention that a kind of name is called " a kind of precision casting process of green-sand vacuum sealed molding ".This patent is done Modeling Material with green-sand, reduce the quantity of core by effective use of foamed material, although reduce the purpose of core quantity and weight, simplified production technology, saved cost, the cast(ing) surface cast out is bright and clean, but product yield is not high, production efficiency is low, can not meet existing technical need.

The utility model content

Technical problem to be solved in the utility model is, overcomes the defect that prior art exists, and a kind of reasonable in design is provided, and production cost is low, and production efficiency is high, has improved the yield rate of foundry goods, has formed any surface finish, true-to-size brake-shoe foundry goods.

The technical scheme in the invention for solving the above technical problem is: a kind of fitting device of Sand-Faced Metal Mould Casting brake-shoe, comprise lower foundry goods, running gate system, swage, template, alignment pin and base, lower foundry goods comprises model and drag, running gate system comprises sprue, cross gate and ingate, lower foundry goods and running gate system all are located on template, template is provided with alignment pin, template is located on base, it is characterized in that: also comprise foundry goods, single-casting, connecting plate, loam core and ingate, described lower foundry goods and upper foundry goods all connect into a single-casting with connecting plate, loam core is arranged in the swage die cavity, the inner chamber of loam core and single-casting, well and cross gate bottom are complementary, ingate is arranged in ingate, this ingate one end is connected with cross gate, the other end is connected with single-casting.

The effect of above structure: running gate system guarantees that metal liquid is full of die cavity stably, the damaged phenomenon of foundry goods that the structure of ingate avoids brake-shoe to cause because beaing ingate, improved casting yield, made brake-shoe working face material even, lower foundry goods and upper foundry goods are linked to be an annulus, form a single-casting, the single-casting inner chamber forms with loam core, by the arrangement of two, a type, lower foundry goods, upper foundry goods and connecting plate is cut off, just obtain lower foundry goods and upper foundry goods, improved production efficiency.

Loam core described in the utility model is arranged in the swage die cavity when mould assembling, and this loam core is hollow structure; So that adopt one case two single-casting, obtain two lower foundry goods and two upper foundry goods, hollow structure has been saved material, has reduced the cost of whole device.

Lower foundry goods described in the utility model and upper foundry goods are two, and single-casting is two, and lower foundry goods, upper foundry goods and single-casting all are arranged on template; Lower foundry goods and upper foundry goods are linked to be an annulus, form a single-casting, and the single-casting inner chamber forms with loam core, by the arrangement design of two, a type, lower foundry goods, upper foundry goods and connecting plate are cut off, and just obtain lower foundry goods and upper foundry goods, have improved production efficiency.

Running gate system described in the utility model is between two single-castings, and ingate is connected with loam core; Brake-shoe does not have the foundry goods misrun phenomenon caused because beaing ingate, has improved casting yield, and brake-shoe working face material is even.

Sprue described in the utility model is one, and cross gate is two, and ingate is four; In order to guarantee that this Sand-Faced Metal Mould Casting reaches required requirement.

Alignment pin described in the utility model is four, and four alignment pins are located at respectively on template; Four alignment pins are for location and guiding.

The utility model compared with prior art has the following advantages and effect: 1, reasonable in design, lower foundry goods and upper foundry goods are linked to be to an annulus, form single-casting, the single-casting inner chamber forms with loam core, arrangement design by two, a type, after going out foundry goods, lower foundry goods, upper foundry goods and connecting plate are cut off, just obtain four lower foundry goods and four upper foundry goods; 2, ingate is opened on non-working surface, and molten iron enters from the termination of two brake-shoes, and brake-shoe does not have the damaged phenomenon of foundry goods caused because beaing ingate, has improved casting yield, and brake-shoe working face tissue is consistent, and material is even; 3, adopt two, a type, improved production efficiency, product yield is greater than 95%; 4, adopt that the Sand-Faced Metal Mould Casting explained hereafter goes out that the cast(ing) surface of brake-shoe is bright and clean, size accurately, dense internal organization, nodularization rate and nodulizing grade compare all and increase with sand casting, remarkable in economical benefits.

The accompanying drawing explanation

Fig. 1 is the whole main TV structure schematic diagram of the utility model.

Fig. 2 is the whole plan structure schematic diagram of the utility model.

The main TV structure schematic diagram of the lower foundry goods in Fig. 3 the utility model.

The main TV structure schematic diagram of the single-casting in Fig. 4 the utility model.

The main TV structure schematic diagram in the loam core in Fig. 5 the utility model.

The plan structure schematic diagram in the loam core in Fig. 6 the utility model.

The main TV structure schematic diagram of the upper swage in Fig. 7 the utility model and lower swage mould assembling.

Upper swage in Fig. 8 the utility model and the side-looking structural representation of lower swage mould assembling.

The structural representation of upper swage is removed in upper swage in Fig. 9 the present invention and lower swage mould assembling.

In figure: lower foundry goods 1, upper foundry goods 2, single-casting II, connecting plate 3, loam core 4, running gate system 5, swage 6, template 7, base 8, alignment pin 9, box fastener 10, run limit 11, air tube 12, brake-shoe termination 13, moulding machine workbench 14, upper model 15, drag 16, cup 17, hollow structure 41, sprue 51, cross gate 52, ingate 53, ingate 531, well 54, cross gate bottom 55, upper swage 61, lower swage 62, hanging axis 63, cope match plate 71, lower template 72, swage die cavity 73, core print 74, inner chamber 75.

The specific embodiment

Below in conjunction with drawings and Examples, the utility model is further described.

Referring to Fig. 1～Fig. 9, the utility model mainly comprises lower foundry goods 1, upper foundry goods 2, single-casting II, connecting plate 3, loam core 4, running gate system 5, swage 6, template 7, base 8, alignment pin 9, box fastener 10.

Lower foundry goods 1, upper foundry goods 2 and single-casting II are installed on template 7, lower foundry goods 1 and upper foundry goods 2 all connect into a single-casting II with connecting plate 3, be connected with core print 74 on loam core 4, loam core 4 is placed in swage die cavity 73, loam core 4 is complementary with inner chamber 75, well 54 and the cross gate bottom 55 of single-casting II, ingate 531 is arranged in ingate 53, and ingate 531 1 ends are connected with cross gate 52, and the other end is connected with the single-casting II.

Running gate system 5 also is arranged on template 7, running gate system 5 is between two single-casting II, running gate system 5 is by sprue 51, cross gate 52 and ingate 53 form, sprue 51, the number of cross gate 52 and ingate 53 is respectively one, two and four, cup 17 is positioned at the top of sprue 51, guide wire liquid flows to into die cavity, cup 17 can slow down the impact of metal liquid stream, make the liquid levelling that enters sprue 51 slow, cup 17 also plays the feeding effect simultaneously, moulding on well 54 and 55 loam core 4, cross gate bottom, loam core 4 use core shooters are made, during mould assembling, swage die cavity 73 is put into in loam core 4, loam core 4 is hollow structure 41.

Swage 6 comprises swage 61 and lower swage 62, and the front and back of swage 6, be equipped with hanging axis 63, and the left and right sides is connected with runs limit 11, on upper swage 61 and lower swage 62, is connected with box fastener 10.

Template 7 comprises cope match plate 71 and lower template 72, and cope match plate 71 and lower template 72 are arranged on respectively on Up/down base 8, and template 7 is used electrical heating, and cope match plate 71 and lower template 72 all are equipped with alignment pin 9.

Totally four of alignment pins 9, four alignment pins 9 are arranged on respectively the horizontal and vertical two ends of template 7, and alignment pin 9 is for location and guide effect, and air tube 12 is connected with lower foundry goods 1, and air tube has screw thread 12 times, is convenient to be arranged on lower foundry goods 1.

Base 8 use Plate Weldings become, and Plane Installation template 7 on base plate is connected with screw between base 8 and template 7, and the bottom surface of base 8 is welded with four blocks of plates, has notch on plate, is screwed on moulding machine workbench 14.

The centre of box fastener 10 is empty, and upper end is equipped with trapezoidal screw, and middle borehole jack is on swage 6, and trapezoidal screw is to backspin, and trapezoidal screw compresses the hanging axis 63 of swage 6 front and back, and upper swage 61 and lower swage 62 are compressed.

The single-casting II is to amplify the swage of manufacturing by certain reduced scale according to the brake-shoe casting dimension, be linked to be an annulus by lower foundry goods 1 and upper foundry goods 2, the wide 26mm in centre, the connecting plate 3 that thickness is 10mm is connected to form, lower foundry goods 1 use horizontal parting is upper model 15 and drag 16, arrangement by two, a type is arranged on respectively on cope match plate 71 and lower template 72, goes up model 15 and is contained on cope match plate 71, drag 16 is contained on lower template 72.

Molten iron enters from two brake-shoe terminations 13, and ingate 531 is opened on non-machined surface, and brake-shoe does not have the damaged phenomenon of foundry goods caused because beaing ingate 531, has improved casting yield, and brake-shoe working face material is even.

The die joint of running gate system 5 and the die joint of foundry goods not in one plane, so moulding on well 54 and 55 loam core 4, cross gate bottom, the loam core 4 use hot boxs in the single-casting II are penetrated the sand moulding, and in baking oven, temperature 200 degree, dry 2.5h, the gas forming amount while pouring into a mould to reduce.

The length and width of template 7 are of a size of 795mm * 500mm, according to difference, arrange and can adjust, and thickness is 60mm, on template 7, offers air discharge duct.

Swage die cavity 73 is than the large 10mm of Die, die cavity partly is used for covering precoated sand, the reinforcement that swage 6 back sides are 20mm with thickness is connected, have the through hole of ф 28 on the upper plane of swage 6, quantity is 20, the thickness of swage 6 is 80mm, before swage 6 covers precoated sand, to first be heated to 260 ℃, while covering sand, sand in moulding machine is under the high pressure draught motion, precoated sand is poured to swage die cavity 73, precoated sand solidifies under the mould of 260 ℃ and swage 6 effects, the front and back of swage 6, hanging axis 63 is housed, the left and right sides is made and is run limit 11, the thickness that runs limit 11 is 30mm, length is 800mm, can on the roller frame of limit, slide.

Template 7 in the present embodiment adopts gray iron HT200 material, and swage 6 adopts gray iron HT200 material, and air tube 12 adopts No. 45 steel.

The production process of the fitting device of a kind of Sand-Faced Metal Mould Casting brake-shoe of the utility model is: during moulding, on special-purpose two-station molding machine, carry out, fitting device is contained on moulding machine workbench 14, upper swage 61 is combined on model, lower swage 62 is combined on drag, workbench rises, with penetrate the sand plate and compress, penetrate sand by moulding machine to the sand-spraying hole on swage 6, then allow workbench descend, allow swage 6 be combined on model and wait for and solidify 3min, by the molding function of moulding machine, swage 6 and model are separated; During mould assembling, by swage 6 upsets, check the chiltern amount of covering of swage 6 inner surfaces, by the die cavity of lower swage 62 upwards, clear up floating sand, the scraps of paper that are 0.8mm at 6 four angle mat thicknesses of swage are let slip filter screen on cross gate 52, and loam core 4 is placed in swage die cavity 73, upper swage 61 is closed, buckle well the case card, above put cup, prepare cast; Before cast, the chemical analysis of molten iron is transferred to C=3.8%, Si=2.1%, Mn=0.8%, P=0.04, S=0.02, Mg=0.04, Re=0.03, the pouring temperature of molten iron is controlled at 1420 ℃, and the duration of pouring is at 10S; After cast, wait for 10min, first with wrench, shed the case card, unpack on case unpacker, while just unpacking, foundry goods is kermesinus, approximately 600 ° of temperature, and then cool to room temperature, be equivalent to foundry goods just in normalizing, makes the matrix of foundry goods reach magnesium iron 600-3; Go out foundry goods, upset swage 6, foundry goods just from swage 62 fall in the hopper of foundry goods, after waiting foundry goods in hopper to fill with, move cleaning place to; Separating casting, remove running gate system 5, and lower foundry goods 1, upper foundry goods 2 and connecting plate 3 are cut off and clean out, and obtains required lower foundry goods 1 and upper foundry goods 2.

Preferably, alignment pin 9 diameters in the present embodiment are ф 20, and the diameter of air tube 12 is ф 9, and the ratio of the sprue 51 in running gate system 5, cross gate 52 and ingate 53 is 1.1:1.3:1.

Preferably, the chemical analysis of the molten iron in the present embodiment is transferred to C=3.8%, Si=2.1%, Mn=0.8%, P=0.04, S=0.02, Mg=0.04, Re=0.03.

Preferably, the pouring temperature of the molten iron in the present embodiment is 1420 ℃, and be 10S the duration of pouring.

Lower foundry goods 1 and upper foundry goods 2 structures in the utility model are identical, in lower foundry goods 1 and upper foundry goods 2 structures, upper model 15 and drag 16 are arranged, and are convenient to statement and understand, and in specification, with lower foundry goods 1 and upper foundry goods 2, distinguish.

It is only below a specific embodiment described in this specification; can in this utility model, increase device; allly according to the utility model patent, conceive equivalence or the simple change that described structure, feature and material are done, be included in the protection domain of the utility model patent.

Claims

1. the fitting device of a Sand-Faced Metal Mould Casting brake-shoe, comprise lower foundry goods, running gate system, swage, template, alignment pin and base, lower foundry goods comprises model and drag, running gate system comprises sprue, cross gate and ingate, lower foundry goods and running gate system all are located on template, template is provided with alignment pin, template is located on base, it is characterized in that: also comprise foundry goods, single-casting, connecting plate, loam core and ingate, described lower foundry goods and upper foundry goods all connect into a single-casting with connecting plate, loam core is arranged in the swage die cavity, the inner chamber of loam core and single-casting, well and cross gate bottom are complementary, ingate is arranged in ingate, this ingate one end is connected with cross gate, the other end is connected with single-casting.

2. the fitting device of Sand-Faced Metal Mould Casting brake-shoe according to claim 1, it is characterized in that: described loam core is arranged in the swage die cavity when mould assembling, and this loam core is hollow structure.

3. the fitting device of Sand-Faced Metal Mould Casting brake-shoe according to claim 1 and 2, it is characterized in that: described lower foundry goods and upper foundry goods are two, and single-casting is two, and lower foundry goods, upper foundry goods and single-casting all are arranged on template.

4. the fitting device of Sand-Faced Metal Mould Casting brake-shoe according to claim 1, it is characterized in that: described running gate system is between two single-castings, and ingate is connected with single-casting.

5. the fitting device of Sand-Faced Metal Mould Casting brake-shoe according to claim 1, it is characterized in that: described sprue is one, and cross gate is two, and ingate is four.

6. the fitting device of Sand-Faced Metal Mould Casting brake-shoe according to claim 1, it is characterized in that: described alignment pin is four, four alignment pins are located on template respectively.